Enormously improved CH3NH3PbI3 film surface for environmentally stable planar perovskite solar cells with PCE exceeding 19.9%
Yang, YG; Feng, SL; Li, M; Li, FC; Zhang, CC; Han, YJ; Li, L; Yuan, JY; Cao, L; Wang, ZK; Sun, BQ; Gao, XY
2018
发表期刊NANO ENERGY
ISSN2211-2855
卷号48页码:10-19
文章类型期刊论文
摘要One of the most important factors governing the photovoltaic efficiency and environmental stability of Perovskite Solar Cells (PSCs) is the quality of their perovskite films. However, the present study demonstrates that CH3NH3PbI3 perovskite films after anti-solvent washing are far from perfect on the surface, where the crystallization degree is quite low with complex multi-phases associated with numerous defects and notable chemical inhomogeneity. Herein, we report a novel anti-solvent washing treatment simply using Hydrogen Iodide (HI) additive in chlorobenzene (CB) which can enormously improve CH3NH3PbI3 films surface with high crystallization phase purity and chemical homogeneity, leading to excellent structural stability under humidity, heat and even tensile force. Based on such high quality films with defect-less surface, fabricated planar PSCs with an architecture of ITO/TiO2/CH3NH3PbI3/Spiro-OMeTAD/MoOx/Au present a champion PCE of 19.94% and improved stability under humidity. Moreover, fabricated flexible planar PSCs on PET/ITO substrates with a champion PCE of 17.32% are shown to be more robust under tensile force than their control devices. The present study thus not only provides more insight into the facile defects passivation process on the surface achieved via balancing halide ions, but also provides a practical but efficient treatment which can be widely used to fabricate high quality CH3NH3PbI3 films for environmentally stable high performance device applications.
关键词Organometal Halide Perovskite High-efficiency Performance Crystallization Hysteresis Conversion Lifetime Defects Cation Layer
DOI10.1016/j.nanoen.2018.03.046
收录类别SCI
语种英语
WOS记录号WOS:000432604600002
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/29003
专题中科院上海应用物理研究所2011-2018年
作者单位1.Yang, YG
2.Feng, SL
3.Li, M
4.Li, FC
5.Zhang, CC
6.Han, YJ
7.Li, L
8.Yuan, JY
9.Cao, L
10.Wang, ZK
11.Sun, BQ
12.Gao, XY
推荐引用方式
GB/T 7714
Yang, YG,Feng, SL,Li, M,et al. Enormously improved CH3NH3PbI3 film surface for environmentally stable planar perovskite solar cells with PCE exceeding 19.9%[J]. NANO ENERGY,2018,48:10-19.
APA Yang, YG.,Feng, SL.,Li, M.,Li, FC.,Zhang, CC.,...&Gao, XY.(2018).Enormously improved CH3NH3PbI3 film surface for environmentally stable planar perovskite solar cells with PCE exceeding 19.9%.NANO ENERGY,48,10-19.
MLA Yang, YG,et al."Enormously improved CH3NH3PbI3 film surface for environmentally stable planar perovskite solar cells with PCE exceeding 19.9%".NANO ENERGY 48(2018):10-19.
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